Need some plumbing advice (underground)

KYErik · Apr 8, 2007

Torrak said:
KYErik,

I just double checked the fittings (haven't buried them yet) and both are the cleanout fittings.

Will that cleanout fitting work as a wye?

Jb

I think they really both need to be wye fittings to ensure that the water is directed where it needs to go. If the washer was emptying while someone flushed the toilet, in theory, the solids could be stopped by a wall of water running up the inclined pipe (washer waste would splsh both directions when it hit the end of that T fitting). With a wye fitting, the washer waste would never travel up the main sewer pipe because of the direction that the waste enters the larger pipe.

I know the washer line definitely should be a wye, and pipe snakes work better when used with wye fittings. I personally would put the cleanout wye upstream from the washer line- but I don't think that part is necessarily code.

Since you will use the 45 degree wye to for the washer drain, you will need to use a 45 degree elbow on the washer drain line so that you can hit the wye at the right angle (this will be a little tricky to get right). On the bright side, it looks like you have plenty of room in your excavated pit to work all of those turns in!

I am surprised we don't have any plumbers on this forum to confirm or deny my advice... I know we have lots of electricians here.

Look at sections C3 and G on this document:

Residential Guide for Plumbing

DWW68 · Apr 8, 2007

KYEric you are right on the money. Code in NY does not allow discharging into the sump, also would not allow the rubber Furnco to be under ground(only to be used were accesiable). You would need a slip coupling (same as a regular coupling but does not have the ridge inside to stop the pipe) or a repair coupling (alot like the Furnco but wrapped with stainless band). By glueing a st. 45 directly into the wye elliminates alot of the guess work on measuring.
As mentioned, it will more than likely work the way it is. Good job.